SAE/AISI 1084 Carbon Steel (UNS G10840)
SAE/AISI 1084 is a high-carbon steel known for its strength, hardness, and wear resistance. Commonly used in tools and machinery, it is ideal for applications demanding edge retention and toughness, such as knives, springs, and mechanical components.
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| Chemical Composition | ||
|---|---|---|
| Element | Min | Max |
| Iron | 98.08% | 98.60% |
| Carbon | 0.80% | 0.93% |
| Manganese | 0.60% | 0.90% |
| Phosphorous | —— | 0.04% |
| Sulfur | —— | 0.05% |
The following table provides a list of SAE/AISI 1084 properties in both SI and US customary/Imperial units.
Click on the button to switch between Metric and Imperial units.
| Physical Properties | Metric |
|---|---|
| Density | 7850 kg/m3 |
| Mechanical Properties | Metric |
| Tensile Strength (Ultimate) | 780 - 930 MPa |
| Tensile Strength (Yield) | 450 - 600 MPa |
| Young’s Modulus (E) | 200 GPa |
| Shear Modulus (G) | 78 GPa |
| Elongation at Break | 10% |
| Reduction of Area | 28 - 45% |
| Poisson’s Ratio (ν) | 0.29 |
| Brinell Hardness | 220 - 270 |
| Thermal Properties | Metric |
| Thermal Conductivity | 52 W/m·K |
| Specific Heat Capacity (Cp) | 470 J/kg·K |
| Coefficient of Thermal Expansion (αL) | 1.2×10-5 1/°C |
| Electrical Properties | Metric |
| Electrical Conductivity | 4.12×106 S/m |
| Electrical Resistivity | 2.43×10-7 Ω·m |
The values in this table are approximate and can vary depending on various factors such as the specific manufacturing process and heat treatment applied to the alloy.
Advantages & Disadvantages of 1084 Carbon Steel
| Advantages | Disadvantages |
|---|---|
| High strength | Susceptible to corrosion |
| Good wear resistance | Limited toughness |
| Ease of sharpening | Brittle nature |
| Cost-effectiveness |
Applications of 1084 Carbon Steel
SAE/AISI 1084 carbon steel is widely used across industries where high strength, hardness, and edge retention are essential, including:
- Knives and Blades: Widely used in the manufacturing of knives, blades, and cutting tools. Its high carbon content provides excellent edge retention and hardness, making it suitable for tasks that require sharpness and durability.
- Hand Tools: Utilized in the production of hand tools such as chisels, punches, hammers, and screwdrivers. The high strength and wear resistance make it well-suited for withstanding the demanding conditions of manual work.
- Springs and Fasteners: Due to its high carbon content, it can be heat-treated to achieve good spring properties. It is used for producing flat springs, coil springs, and other spring components, as well as fasteners like bolts and screws.
- Industrial Machinery Parts: Employed in various industrial machinery parts, such as gears, shafts, axles, and couplings. Its strength and wear resistance make it suitable for applications that involve heavy loads, friction, and stress.
- Automotive Components: The high strength and durability make it useful for automotive components. It is utilized in the production of crankshafts, camshafts, valve springs, and other parts that require resistance to wear and fatigue.
- Construction Tools: Tools used in construction and woodworking, such as axes, hatchets, and saws, can be made from this steel. Its hardness and toughness make it suitable for withstanding the rigors of demanding construction tasks.
- Agricultural Implements: Utilized in the manufacturing of agricultural tools like sickles, scythes, and machetes. These tools benefit from the steel’s sharpness, strength, and durability in cutting through vegetation.